Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Michael Mackenzie Johnson, MD

Individual provider Internal Medicine Physician · NPI 1609869643

Dr. Michael Mackenzie Johnson, MD is an Internal Medicine in Sun City, Arizona. Graduated from University of Arizona College of Medicine in 1983, 43 years ago. Practices with Maxwell Group, a 10-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
43
Trained at
University of Arizona College of Medicine
Licensed in
AZ
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

14678 N Del Webb Blvd
Sun City, AZ 85351-2137
Phone: (623) 933-8289
Fax: (623) 933-2596
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 12960 (AZ)

Record details

NPI number1609869643
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2005
Last updated in NPPESSeptember 9, 2016
Mailing address14678 N Del Webb Blvd, Sun City, AZ 85351-2137

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 1983 (43 years in practice)
Group practice Maxwell Group — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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